“Starburstiness” against (2–10) keV X-ray luminosity for the sources in our sample. The grey area is the same as in Fig. 9 and the data-points and error-bars are as in Fig. 8, substituting the gray point with cyan. We again do not detect any significant correlation between the “starburstiness” and the X-ray luminosity for z ≲ 1, but there is a correlation for z ≳ 1, within the redshift bins.